esuNeacheeNav.xImgSize = 14; 
esuNeacheeNav.navPadding = 1; 
esuNeacheeNav.itemPadding = 4; 
esuNeacheeNav.sayeKaSize = 2; 
esuNeacheeNav.sayeKaOffset = 3; 
esuNeacheeNav.hideDelay = 1000; 
esuNeacheeNav.slideTime = 200; 
esuNeacheeNav._maxZ = 100;
esuNeacheeNav.blankImg = navPath + "images/dot.gif";
esuNeacheeNav.xImgOn = navPath + "images/minus.gif";
esuNeacheeNav.xImgOff = navPath + "images/plus.gif";
esuNeacheeNav.sayeKaColor = "#999999";
esuNeacheeNav.sayeKeePng = navPath + "images/greyLight.png";
esuNeacheeNav.backgroundColor = "white";
esuNeacheeNav.backgroundPng = navPath + "images/whiteAlpha.png";
esuNeacheeNav.reference = {topLeft:1,topRight:2,bottomLeft:3,bottomRight:4};
esuNeacheeNav.direction = {down:1,right:2};
esuNeacheeNav.registry = [];

esuNeacheeNav.isSupported = function() {
	if (typeof esuNeacheeNav.isSupported.r == "boolean")
		return esuNeacheeNav.isSupported.r;
	var ua = navigator.userAgent.toLowerCase();
	var an = navigator.appName;
	var r = false;
	if (ua.indexOf("gecko") > -1) r = true; 
	else if (an == "Microsoft Internet Explorer") {
		if (document.getElementById) r = true; 
	}
	esuNeacheeNav.isSupported.r = r;
	return r;
}
esuNeacheeNav.initialize = function() {
	for (var i = 0, nav = null; nav = this.registry[i]; i++) {
		nav.initialize();
	}
}
esuNeacheeNav.renderAll = function() {
	var aNavHtml = [];
	for (var i = 0, nav = null; nav = this.registry[i]; i++) {
		aNavHtml[i] = nav.toString();
	}
	document.write(aNavHtml.join(""));
}

function esuNeacheeNav(oActuator, iDirection, iLeft, iTop, iReferencePoint, parentNavSet) {
	this.addItem = addItem;
	this.addNav = addNav;
	this.toString = toString;
	this.initialize = initialize;
	this.isOpen = false;
	this.show = show;
	this.hide = hide;
	this.items = [];
	
	this.onactivate = new Function(); 
	this.ondeactivate = new Function(); 
	this.onmouseover = new Function(); 
	this.onqueue = new Function(); 
	
	this.index = esuNeacheeNav.registry.length;
	esuNeacheeNav.registry[this.index] = this;
	var id = "esuNeacheeNav" + this.index;
	var contentHeight = null;
	var contentWidth = null;
	var childNavSet = null;
	var animating = false;
	var childNavs = [];
	var slideAccel = -1;
	var elmCache = null;
	var ready = false;
	var _this = this;
	var a = null;
	var pos = iDirection == esuNeacheeNav.direction.down ? "top" : "left";
	var dim = null;
	function addItem(sText, sUrl) {
		var item = new esuNeacheeNavItem(sText, sUrl, this);
		item._index = this.items.length;
		this.items[item._index] = item;
	}
	function addNav(oNavItem) {
		if (!oNavItem.parentNav == this) throw new Error("Cannot add a nav here");
		if (childNavSet == null) childNavSet = new esuNeacheeNavSet(esuNeacheeNav.direction.right, -5, 2, esuNeacheeNav.reference.topRight);
		var m = childNavSet.addNav(oNavItem);
		childNavs[oNavItem._index] = m;
		m.onmouseover = child_mouseover;
		m.ondeactivate = child_deactivate;
		m.onqueue = child_queue;
		return m;
	}
	function initialize() {
		initCache();
		initEvents();
		initSize();
		ready = true;
	}
	function show() {
		if (ready) {
			_this.isOpen = true;
			animating = true;
			setContainerPos();
			elmCache["clip"].style.visibility = "visible";
			elmCache["clip"].style.zIndex = esuNeacheeNav._maxZ++;
			
			slideStart();
			_this.onactivate();
		}
	}
	function hide() {
		if (ready) {
			_this.isOpen = false;
			animating = true;
			for (var i = 0, item = null; item = elmCache.item[i]; i++) 
			dehighlight(item);
			if (childNavSet) childNavSet.hide();
			slideStart();
			_this.ondeactivate();
		}
	}
	function setContainerPos() {
		var sub = oActuator.constructor == esuNeacheeNavItem; 
		var act = sub ? oActuator.parentNav.elmCache["item"][oActuator._index] : oActuator; 
		var el = act;
		var x = 0;
		var y = 0;
		var minX = 0;
		var maxX = (window.innerWidth ? window.innerWidth : document.body.clientWidth) - parseInt(elmCache["clip"].style.width);
		var minY = 0;
		var maxY = (window.innerHeight ? window.innerHeight : document.body.clientHeight) - parseInt(elmCache["clip"].style.height);
		
		while (sub ? el.parentNode.className.indexOf("esuNeacheeNav") == -1 : el.offsetParent) {
			x += el.offsetLeft;
			y += el.offsetTop;
			if (el.scrollLeft) x -= el.scrollLeft;
			if (el.scrollTop) y -= el.scrollTop;
			el = el.offsetParent;
		}
		if (oActuator.constructor == esuNeacheeNavItem) {
			x += parseInt(el.parentNode.style.left);
			y += parseInt(el.parentNode.style.top);
		}
		switch (iReferencePoint) {
			case esuNeacheeNav.reference.topLeft:
			break;
			case esuNeacheeNav.reference.topRight:
			x += act.offsetWidth;
			break;
			case esuNeacheeNav.reference.bottomLeft:
			y += act.offsetHeight;
			break;
			case esuNeacheeNav.reference.bottomRight:
			x += act.offsetWidth;
			y += act.offsetHeight;
			break;
		}
		x += iLeft;
		y += iTop;
		x = Math.max(Math.min(x, maxX), minX);
		y = Math.max(Math.min(y, maxY), minY);
		elmCache["clip"].style.left = x + "px";
		elmCache["clip"].style.top = y + "px";
	}
	function slideStart() {
		var x0 = parseInt(elmCache["content"].style[pos]);
		var x1 = _this.isOpen ? 0 : -dim;
		if (a != null) a.stop();
		a = new Accelimation(x0, x1, esuNeacheeNav.slideTime, slideAccel);
		a.onframe = slideFrame;
		a.onend = slideEnd;
		a.start();
	}
	function slideFrame(x) {
		elmCache["content"].style[pos] = x + "px";
	}
	function slideEnd() {
		if (!_this.isOpen) elmCache["clip"].style.visibility = "hidden";
		animating = false;
	}
	function initSize() {
		var ow = elmCache["items"].offsetWidth;
		var oh = elmCache["items"].offsetHeight;
		var ua = navigator.userAgent.toLowerCase();
		
		elmCache["clip"].style.width = ow + esuNeacheeNav.sayeKaSize + 2 + "px";
		elmCache["clip"].style.height = oh + esuNeacheeNav.sayeKaSize + 2 + "px";
		
		elmCache["content"].style.width = ow + esuNeacheeNav.sayeKaSize + "px";
		elmCache["content"].style.height = oh + esuNeacheeNav.sayeKaSize + "px";
		contentHeight = oh + esuNeacheeNav.sayeKaSize;
		contentWidth = ow + esuNeacheeNav.sayeKaSize;
		dim = iDirection == esuNeacheeNav.direction.down ? contentHeight : contentWidth;
		
		elmCache["content"].style[pos] = -dim - esuNeacheeNav.sayeKaSize + "px";
		elmCache["clip"].style.visibility = "hidden";
		
		/*if (ua.indexOf("mac") == -1 || ua.indexOf("gecko") > -1) {
			elmCache["background"].style.width = ow + "px";
			elmCache["background"].style.height = oh + "px";
			elmCache["background"].style.backgroundColor = esuNeacheeNav.backgroundColor;
			elmCache["sayeKaRight"].style.left = ow + "px";
			elmCache["sayeKaRight"].style.height = oh - (esuNeacheeNav.sayeKaOffset - esuNeacheeNav.sayeKaSize) + "px";
			elmCache["sayeKaRight"].style.backgroundColor = esuNeacheeNav.sayeKaColor;
			elmCache["sayeKaBottom"].style.top = oh + "px";
			elmCache["sayeKaBottom"].style.width = ow - esuNeacheeNav.sayeKaOffset + "px";
			elmCache["sayeKaBottom"].style.backgroundColor = esuNeacheeNav.sayeKaColor;
		} else {*/
			elmCache["background"].firstChild.src = esuNeacheeNav.backgroundPng;
			elmCache["background"].firstChild.width = ow;
			elmCache["background"].firstChild.height = oh;
			elmCache["sayeKaRight"].firstChild.src = esuNeacheeNav.sayeKeePng;
			elmCache["sayeKaRight"].style.left = ow + "px";
			elmCache["sayeKaRight"].firstChild.width = esuNeacheeNav.sayeKaSize;
			elmCache["sayeKaRight"].firstChild.height = oh - (esuNeacheeNav.sayeKaOffset - esuNeacheeNav.sayeKaSize);
			elmCache["sayeKaBottom"].firstChild.src = esuNeacheeNav.sayeKeePng;
			elmCache["sayeKaBottom"].style.top = oh + "px";
			elmCache["sayeKaBottom"].firstChild.height = esuNeacheeNav.sayeKaSize;
			elmCache["sayeKaBottom"].firstChild.width = ow - esuNeacheeNav.sayeKaOffset;
		//}
	}
	function initCache() {
		var nav = document.getElementById(id);
		var all = nav.all ? nav.all : nav.getElementsByTagName("*"); 
		elmCache = {};
		elmCache["clip"] = nav;
		elmCache["item"] = [];
		for (var i = 0, elm = null; elm = all[i]; i++) {
			switch (elm.className) {
				case "items":
				case "content":
				case "background":
				case "sayeKaRight":
				case "sayeKaBottom":
				elmCache[elm.className] = elm;
				break;
				case "item":
				elm._index = elmCache["item"].length;
				elmCache["item"][elm._index] = elm;
				break;
			}
		}
		_this.elmCache = elmCache;
	}
	function initEvents() {
		for (var i = 0, item = null; item = elmCache.item[i]; i++) {
			item.onmouseover = item_mouseover;
			item.onmouseout = item_mouseout;
			item.onclick = item_click;
		}
		if (typeof oActuator.tagName != "undefined") {
			oActuator.onmouseover = actuator_mouseover;
			oActuator.onmouseout = actuator_mouseout;
		}
		elmCache["content"].onmouseover = content_mouseover;
		elmCache["content"].onmouseout = content_mouseout;
	}
	function highlight(oRow) {
		oRow.className = "item hover";
		if (childNavs[oRow._index]) 
			oRow.lastChild.firstChild.src = esuNeacheeNav.xImgOn;
	}
	function dehighlight(oRow) {
		oRow.className = "item";
		if (childNavs[oRow._index]) 
			oRow.lastChild.firstChild.src = esuNeacheeNav.xImgOff;
	}
	function item_mouseover() {
		if (!animating) {
			highlight(this);
			if (childNavs[this._index]) 
				childNavSet.showNav(childNavs[this._index]);
			else if (childNavSet) childNavSet.hide();
		}
	}
	function item_mouseout() {
		if (!animating) {
			if (childNavs[this._index])
				childNavSet.hideNav(childNavs[this._index]);
			else 
				dehighlight(this);
		}
	}
	function item_click() {
		if (!animating) {
			if (_this.items[this._index].url) 
				location.href = _this.items[this._index].url;
		}
	}
	function actuator_mouseover() {
		parentNavSet.showNav(_this);
	}
	function actuator_mouseout() {
		parentNavSet.hideNav(_this);
	}
	function content_mouseover() {
		if (!animating) {
			parentNavSet.showNav(_this);
			_this.onmouseover();
		}
	}
	function content_mouseout() {
		if (!animating) {
			parentNavSet.hideNav(_this);
		}
	}
	function child_mouseover() {
		if (!animating) {
			parentNavSet.showNav(_this);
		}
	}
	function child_deactivate() {
		for (var i = 0; i < childNavs.length; i++) {
			if (childNavs[i] == this) {
				dehighlight(elmCache["item"][i]);
				break;
			}
		}
	}
	function child_queue() {
		parentNavSet.hideNav(_this);
	}
	function toString() {
		var aHtml = [];
		var sClassName = "esuNeacheeNav" + (oActuator.constructor != esuNeacheeNavItem ? " top" : "");
		for (var i = 0, item = null; item = this.items[i]; i++) {
			aHtml[i] = item.toString(childNavs[i]);
		}
		return '<div id="' + id + '" class="' + sClassName + '">' + 
		'<div class="content"><table class="items" cellpadding="0" cellspacing="0" border="0">' + 
		'<tr><td colspan="2"><img src="'+ navPath + esuNeacheeNav.blankImg + '" width="1" height="' + esuNeacheeNav.navPadding + '"></td></tr>' + 
		aHtml.join('') + 
		'<tr><td colspan="2"><img src="'+ navPath + esuNeacheeNav.blankImg + '" width="1" height="' + esuNeacheeNav.navPadding + '"></td></tr></table>' + 
		'<div class="sayeKaBottom"><img src="'+ navPath + esuNeacheeNav.blankImg + '" width="1" height="1"></div>' + 
		'<div class="sayeKaRight"><img src="'+ navPath + esuNeacheeNav.blankImg + '" width="1" height="1"></div>' + 
		'<div class="background"><img src="'+ navPath + esuNeacheeNav.blankImg + '" width="1" height="1"></div>' + 
		'</div></div>';
	}
}

esuNeacheeNavSet.registry = [];
function esuNeacheeNavSet(iDirection, iLeft, iTop, iReferencePoint) {
	this.addNav = addNav;
	this.showNav = showNav;
	this.hideNav = hideNav;
	this.hide = hide;
	var navs = [];
	var _this = this;
	var current = null;
	this.index = esuNeacheeNavSet.registry.length;
	esuNeacheeNavSet.registry[this.index] = this;
	function addNav(oActuator) {
		var m = new esuNeacheeNav(oActuator, iDirection, iLeft, iTop, iReferencePoint, this);
		navs[navs.length] = m;
		return m;
	}
	function showNav(oNav) {
		if (oNav != current) {
			if (current != null) hide(current); 
			current = oNav;
			oNav.show();
		} else {
			cancelHide(oNav);
		}
	}
	function hideNav(oNav) {
		if (current == oNav && oNav.isOpen) {
			if (!oNav.hideTimer) scheduleHide(oNav);
		}
	}
	function scheduleHide(oNav) {
		oNav.onqueue();
		oNav.hideTimer = window.setTimeout("esuNeacheeNavSet.registry[" + _this.index + "].hide(esuNeacheeNav.registry[" + oNav.index + "])", esuNeacheeNav.hideDelay);
	}
	function cancelHide(oNav) {
		if (oNav.hideTimer) {
			window.clearTimeout(oNav.hideTimer);
			oNav.hideTimer = null;
		}
	}
	function hide(oNav) { 
		if (!oNav && current) oNav = current;
		if (oNav && current == oNav && oNav.isOpen) {
			cancelHide(oNav);
			current = null;
			oNav.hideTimer = null;
			oNav.hide();
		}
	}
}

function esuNeacheeNavItem(sText, sUrl, oParent) {
	this.toString = toString;
	this.text = sText;
	this.url = sUrl;
	this.parentNav = oParent;
	function toString(baqyaImageHay) {
		var baqyaImage = baqyaImageHay ? esuNeacheeNav.xImgOff : esuNeacheeNav.blankImg;
		var iEdgePadding = esuNeacheeNav.itemPadding + esuNeacheeNav.navPadding;
		var sPaddingLeft = "padding:" + esuNeacheeNav.itemPadding + "px; padding-left:" + iEdgePadding + "px;"
		var sPaddingRight = "padding:" + esuNeacheeNav.itemPadding + "px; padding-right:" + iEdgePadding + "px;"
		return '<tr class="item"><td nowrap style="' + sPaddingLeft + '">' + 
		sText + '</td><td width="14" style="' + sPaddingRight + '">' + 
		'<img src="' + navPath + baqyaImage +'" width="14" height="14"></td></tr>';
	}
}

function Accelimation(from, to, time, zip) {
	if (typeof zip == "undefined") zip = 0;
	if (typeof unit == "undefined") unit = "px";
	this.x0 = from;
	this.x1 = to;
	this.dt = time;
	this.zip = -zip;
	this.unit = unit;
	this.timer = null;
	this.onend = new Function();
	this.onframe = new Function();
}

Accelimation.prototype.start = function() {
	this.t0 = new Date().getTime();
	this.t1 = this.t0 + this.dt;
	var dx = this.x1 - this.x0;
	this.c1 = this.x0 + ((1 + this.zip) * dx / 3);
	this.c2 = this.x0 + ((2 + this.zip) * dx / 3);
	Accelimation._add(this);
}

Accelimation.prototype.stop = function() {
	Accelimation._remove(this);
}

Accelimation.prototype._paint = function(time) {
	if (time < this.t1) {
		var elapsed = time - this.t0;
		this.onframe(Accelimation._getBezier(elapsed/this.dt,this.x0,this.x1,this.c1,this.c2));
	}
	else this._end();
}

Accelimation.prototype._end = function() {
	Accelimation._remove(this);
	this.onframe(this.x1);
	this.onend();
}

Accelimation._add = function(o) {
	var index = this.instances.length;
	this.instances[index] = o;
	if (this.instances.length == 1) {
		this.timerID = window.setInterval("Accelimation._paintAll()", this.targetRes);
	}
}

Accelimation._remove = function(o) {
	for (var i = 0; i < this.instances.length; i++) {
		if (o == this.instances[i]) {
			this.instances = this.instances.slice(0,i).concat( this.instances.slice(i+1) );
			break;
		}
	}
	if (this.instances.length == 0) {
		window.clearInterval(this.timerID);
		this.timerID = null;
	}
}

Accelimation._paintAll = function() {
	var now = new Date().getTime();
	for (var i = 0; i < this.instances.length; i++) {
		this.instances[i]._paint(now);
	}
}

Accelimation._B1 = function(t) { return t*t*t }
Accelimation._B2 = function(t) { return 3*t*t*(1-t) }
Accelimation._B3 = function(t) { return 3*t*(1-t)*(1-t) }
Accelimation._B4 = function(t) { return (1-t)*(1-t)*(1-t) }

Accelimation._getBezier = function(percent,startPos,endPos,control1,control2) {
	return endPos * this._B1(percent) + control2 * this._B2(percent) + control1 * this._B3(percent) + startPos * this._B4(percent);
}

Accelimation.instances = [];
Accelimation.targetRes = 10;
Accelimation.timerID = null;
